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30 September 2024 Intrinsically stretchable quantum dot light-emitting diodes
Moon Kee Choi
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Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 1312206 (2024) https://doi.org/10.1117/12.3030080
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
The study presents innovative strategies for intrinsically-stretchable (is-) quantum dot light-emitting diodes (QLEDs), crucial for future user-friendly displays. It introduces a mechanically soft and stretchable is-EML composed of colloidal quantum dots (QDs), elastomeric polymer, and charge transport polymer. Despite high stretchability, the inter-QD spacing remains minimally altered under ~50% strain, ensuring stable device operation. A polymer-rich charge transport layer facilitates efficient hole transport to QDs within the elastomer matrix. Fully-optimized is-QLEDs, comprising an is-EML, charge transport layers, and stretchable electrodes, demonstrate impressive performance, including a low turn-on voltage of 3.2 V and a maximum luminance of 15,170 cd m-2 at 6.2 V, maintaining brightness even under 50% strain. These advancements enable full-color is-passive-matrix QLED arrays, showcasing potential for fully-stretchable QD displays.
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Moon Kee Choi "Intrinsically stretchable quantum dot light-emitting diodes", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 1312206 (30 September 2024); https://doi.org/10.1117/12.3030080
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KEYWORDS
Colloidal quantum dots
Light emitting diodes
Quantum dot light emitters
Polymers
Electrodes
Matrices
Quantum devices
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